If you use a camera, then perhaps the injection of dust (lycopodium) and its propagation could be traced from a video and used to calibrate the windspeed measurement.
A pitot setup with monitoring glass is simple to setup and the glass could be monitored by a camera / RPi.
https://en.wikipedia.org/wiki/Pitot_tub ... ometer.svg
If continuous, long-term observation is not required, then a setup with a barrel and a piston, driven by a motor, could generate a defined volume flow (albeit not for long).
Either way, laminar stream is needed and you will have plenty of space before/after the monitoring chamber to insert the measurement equipment.
I have seen video of similar setup, perhaps at higher speeds, used to monitor the shape of falling water drops.
A pitot setup with monitoring glass is simple to setup and the glass could be monitored by a camera / RPi.
https://en.wikipedia.org/wiki/Pitot_tub ... ometer.svg
If continuous, long-term observation is not required, then a setup with a barrel and a piston, driven by a motor, could generate a defined volume flow (albeit not for long).
Either way, laminar stream is needed and you will have plenty of space before/after the monitoring chamber to insert the measurement equipment.
I have seen video of similar setup, perhaps at higher speeds, used to monitor the shape of falling water drops.
Statistics: Posted by ghp — Tue Jun 10, 2025 7:02 am